When a jack rafter is face nailed to a hip rafter, what is the minimum number of 16d common nails that should be used?

When a jack rafter is face nailed to a hip rafter, the correct number of 16d common nails to use is three. This is due to the need for sufficient structural integrity and load-bearing capacity at the connection point between the jack rafter and the hip rafter.

Using three nails ensures that the joint can effectively transfer loads without risk of failure. This amount of fasteners also helps to prevent potential movement or separation over time due to environmental factors or stress on the rafters, such as wind uplift or snow load.

In roofing construction, it is essential to follow established codes and best practices to ensure safety and durability. Choosing fewer nails might compromise the strength of the connection, potentially leading to structural failures. Therefore, using three 16d nails not only adheres to guidelines for proper fastening techniques but also promotes long-term reliability of the roofing system.